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Suppose .050 moles of a substance reacts in 25.0 grams of water. If the water temperature goes from 22 degrees C to 26 degrees C, how much heat was given off? How much heat would be given off if one mole of the substance reacted?
The terms SCOT, WCOT, & PLOT are frequently used to describe types of GC columns. Specifically how do these columns differ from "Packed" columns in their structure and function
Write a brief discussion of the bond dipoles of iodomethane and the corresponding Grignard reagent.
at 25 C, a sample of NH3(molar mass= 17g/mol) effuses at a rate of .050 mole per min. under the same conditions, which of the fallowing gases effuses at approximately one-half that rate
A 27.0-g sample of water at 270. K is mixed with 49.0 g water at 340. K. Calculate the final temperature of the mixture assuming no heat loss to the surroundings.
A buffer solution is prepared by adding 0.125 mol of ammonium chloride to 500 mL of 0.500 M solution of ammonium. What is the pH of the buffer
At 10 degrees celcius the Henry's law constant for Chlorine in water is 0.13 M/atm. What is the concentration of Chloride in water if the particial pressure of Cl is 1.33 atm
a 10.00-mL sample of sulfuric acid from an automobile battery requires 35.08 mL of 2.12 M sodium hydroxide solution for complete neutralization. what is the molarity of the sulfuric acid? sulfuric acid contains two acidic hydrogens.
In which case is a process spontaneous at any temperature? delta H : Negative delta s : Positive 6. For the reaction: C3H8(g) + 5O2(g) ->3CO2(g) +4H2O(l) Calculate the delta G at 298K given the delta G, KJ/mol of C3H8(g)=-23.47; O2=0; CO2=-394.4; ..
If you were extracting 4-chloroaniline and naphthalene (a mixture in ether), what reagents could you use to obtain a separation via extraction technique
If ammonia was added to a saturated solution of copper(II) iodate in a equilibrium with its precipitate, would the copper ion concentration increase, decrease, or stay the same. Why
determined using x rays methods. Remember a, b, c are unit cell dimensions . X', y' and z' are intercepts. Only the information you need is given . You may encounter as unusual rarely formed face
a chemical reaction occurs between solutions of rbcl and silver nitrate. this reaction produces a precipitate that is
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